- Bahá'u'lláh Bahá'í World Centre, trans. Additional Tablets and Extracts from Tablets Revealed by Bahá'u'lláh (2018/2023). — 80 selections, updated August 2023.
- Moojan Momen. Ages and Cycles (1995). — Overview of the ideas of specific cycles and periods of time in Baha'i belief.
- Abdu'l-Bahá. Answered Questions, Some (2014). — 'Table talks' given by ‘Abdu’l‑Baha in ‘Akka between 1904 and 1906 in response to questions ...
- Arjen Bolhuis. Chart of the Eras and Epochs of Bahá'í History (2000). — Diagram of the periods of Baha'i history. Available in English and Russian.
- Research Department of the Universal House of Justice. Epochs of the Formative Age (1996). — On dating and defining the three major evolutionary "Ages" of Baha'i history, and the five "epochs" ...
- Karl Weaver. Explanation of a Zoroastrian Prophecy: Length of the "Bahá'í Cycle" (2017). — Review of certain concepts in Judaism, Christianity, Islam, ancient astrology, and modern astronomic...
- Arjen Bolhuis. First Kull-i-Shay' of the Bahá'í Era, The (1999). — Chart of the first 361 years (19*19) of the Baha'i Era, in both HTML and Excel formats.
- Dana Paxson. Half Million Years, A (2021). — Exploring the 500,000-year Baha’i cycle asserted by Shoghi Effendi, in two versions: academic-styl...
- Moojan Momen. Hinduism and the Bahá'í Faith (1990). — An attempt to explore the relationship between Hinduism and the Baha'i Faith and to explain the Baha...
- Bahá'u'lláh and Abdu'l-Bahá et al. Helen Bassett Hornby, comp. Lights of Guidance: A Bahá'í Reference File (1988). — The classic Baha'i reference book. This is its first online edition.
- John Conkling, comp. Majestic Process, The: Cycles, Eras, Epochs and Stages (2004). — A one page chart developed as a class handout on the "Majestic Process," the Ages and Epochs of the ...
- Benjamin Olshin. Mikhail Sergeev, Theory of Religious Cycles: Tradition, Modernity and the Bahá'í Faith: Review (2015).
- Ali Nakhjavani. Ninth cycle of the Bahá'í calendar, The (2015). — Essay clarifying some technical issues involved with calculating lunar calendars, and how to appreci...
- Universal House of Justice. Ridván 1964: Bahá'í Era 121 (1964). — Annual message to the Baha'is of the world.
- Mikhail Sergeev. Theses on Modernity and the Bahá'í Faith (2015). — On how new religious movements respond to modernity; cycles of religion; project of modernity; cultu...
- Unfoldment of the Divine Plan (2021). — Visual overview of the Baha'i Cycle, the Baha'i Era, the three Ages, the three Epochs, and all of th...
- Abdu'l-Bahá and Shoghi Effendi et al. Iscander Micael Tinto, comp. Universal Cycles, The (2013). — Lengthy compilation on the cycles of time and eras in the world of existence, and stages of Baha'i d...
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